CN205763582U - The die device of hemisphere isothermal gas expansion forming in vacuum - Google Patents
The die device of hemisphere isothermal gas expansion forming in vacuum Download PDFInfo
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- CN205763582U CN205763582U CN201620506897.XU CN201620506897U CN205763582U CN 205763582 U CN205763582 U CN 205763582U CN 201620506897 U CN201620506897 U CN 201620506897U CN 205763582 U CN205763582 U CN 205763582U
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- upper mold
- female die
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Abstract
A kind of die device of hemisphere isothermal gas expansion forming in vacuum, including: upper mold section, female die, support ring, stripper, hammer stem, vacuum chamber, the insulating mechanism being arranged in vacuum chamber, heating collar and bearing, wherein: upper mold section and female die match, and it is arranged at central authorities in vacuum chamber, support ring is arranged on upper mold section, and be connected with bearing, bearing is arranged over hammer stem, insulating mechanism is respectively arranged at the lower section of female die and the surrounding of heating collar, and heating collar is arranged at the surrounding of upper mold section and female die；This utility model is reasonable in design, can be once-forming, reduces cost and time loss.
Description
Technical field
The utility model relates to a kind of technology forging field, specifically a kind of hemisphere isothermal gas expansion forming in vacuum
Die device.
Background technology
At present, there are two research directions in the hemispherical ausforming aerostatics department at the storage sphere of titanium, and one determines that
The method of various superplasticformings (both macro and micro) under the conditions of various temperature Rate, such as TC3, TC14, TC18；Another
Determine that technological parameter eliminates the impact of Wall-Thickness Difference in physical dimension, deformation behaviour distribution and the deformation process drafted of die forging part.
Offshore company such as British Aerocraft Corp (British Airways), Boeing, Rohr Industries (U.S.'s Boeing
Company), Aerospace (Aérospatiale Matra), Kpacma ш aviation maintenance station machinery plant, OAOPKK energy unlimited company,
OAOB П KH П O machine manufactures the experience of research and production joint enterprise and constitutes by sheet material work of formed hollow part under superplastic state
The more excellent design of skill process, equipment configuration and technological parameter or selection.
Owing to hemispherical titanium gas cylinder cools down together with mould, so cause balloon interior to have residual stress, make the gas cylinder after processing
Also can deform.Shaping instantaneous temperature 830 ± 7 DEG C from hemispherical titanium bottle to count, cool time wants 20h.First, in cooling procedure
The mainly hemisphere titanium bottle manufacturing time expended；Secondly, extrusion is used for the hemisphere titanium gas cylinder after being removed from the molds cooling
Method, due to hemisphere in cooling procedure different because of linear expansion coefficient, and exist between die wall and shrink poor, it is coarse that half club wedges die
Wall portion is wide in sticking to mould, causes die to be heated for a long time.
Utility model content
This utility model is for solving the precision problem of part in prior art and cool down the residual stress problems caused with mould
Etc. deficiency, a kind of die device of hemisphere isothermal gas expansion forming in vacuum is proposed, by mould install stripper,
I.e. separate with mould in making the slab short time after forming, cool down rapidly, it is not necessary to the mounting or dismounting of mould, can be once-forming, efficient quick.
This utility model is achieved through the following technical solutions:
This utility model includes: upper mold section, female die, support ring, stripper, hammer stem, vacuum chamber, be arranged in vacuum chamber
Insulating mechanism, heating collar and bearing, wherein: upper mold section and female die match, and be arranged in vacuum chamber central authorities；Support ring
It is arranged on upper mold section, and is connected with bearing；Bearing is arranged over hammer stem；Insulating mechanism is respectively arranged at the lower section of female die and adds
The surrounding of gas ket；Heating collar is arranged at the surrounding of upper mold section and female die.
Described upper mold section external cylindrical surface is slidably matched with female die inner cylinder face.
The inwall of described female die is hemispherical.
Described upper mold section is provided with release mechanism below support ring.
Described upper mold section is connected by hemisphere flange in edge with female die.
Described upper mold section and the junction horizontal positioned slab of female die.
The spherical side of described upper mold section, the side of female die and bottom are respectively equipped with thermocouple.
Described release mechanism is pop off valve.
Described support ring is provided with stripper.
Technique effect
Compared with prior art, this utility model is removed from the molds after die-forging forming at once by titanium hemisphere, divides with mould
Open cooling, shorten titanium hemisphere cool time, eliminate titanium hemisphere and the mould warpage when common cooling forming and residual stress,
And eliminate mounting or dismounting operation and the time of folding pipeline of mould, while ensureing the hemispheroidal quality of titanium, increase equipment productivity.
Accompanying drawing explanation
Fig. 1 is this utility model schematic diagram；
In figure: 1 female die, 2 upper mold sections, 3 release mechanisms, 4 support rings, 5 centering machines, 6 lifting suspension ring, 7 hammer stems,
8 bearings, 9 insulating mechanisms, 10 slabs, 11 heating collars, 12 pressure transducers, 13 vacuum chambers, 14 cylindrical guide pin bushings, 15
Ball, 16 force bearings.
Detailed description of the invention
Elaborating embodiment of the present utility model below, the present embodiment enters under premised on technical solutions of the utility model
Row is implemented, and gives detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following reality
Execute example.
Embodiment 1
As it is shown in figure 1, the present embodiment includes: slab 10, upper mold section 2, female die 1, support ring 4, hammer stem 7, vacuum
Room 13, the insulating mechanism 9 being arranged in vacuum chamber 13, heating collar 11 and bearing 8, wherein: upper mold section 2 and female die 1 phase
Coordinate, and be arranged at central authorities in vacuum chamber 13；Slab 10 is horizontally placed between upper mold section 2 and female die 1；Support ring 4 sets
It is placed on upper mold section 2, and is connected with bearing 8；Bearing 8 is arranged over hammer stem 7；Insulating mechanism 9 is respectively arranged at female die 1
Lower section and the surrounding of heating collar 11；Heating collar 11 is arranged at upper mold section 2 and the surrounding of female die 1.
Described upper mold section 2 is connected by hemisphere flange in edge with female die 1.
Due to most of alloys stress under superplastic state the least (5～20MPa), it is positioned at the mould parts of high-temperature region, as titanium closes
Gold can reach 900～950 DEG C, and described upper mold section 2 and female die 1 use heat resisting steel or cermet material manufacture.
Described hemisphere flange thickness is 3.6mm.
Described upper mold section 2 external cylindrical surface is slidably matched with female die 1 inner cylinder face.
The inwall of described female die 1 is hemispherical.
Described upper mold section 2 is provided with release mechanism 3 below support ring 4.
Described support ring 4 is provided with stripper；
Described release mechanism 3 is pop off valve, automatically opens up when argon pressure is more than 2MPa.
The spherical side of described upper mold section 2, the side of female die 1 and bottom are respectively equipped with thermocouple EK1, EK2 and EK6.
Described bearing 8 is outside is provided with centering machine 5, and this centering machine 5 includes: cylindrical guide pin bushing 14 and movable setting
Some balls 15 in the inner.
It is connected by force bearing 16 is fixing between described bearing 8 and hammer stem 7.
Described insulating mechanism 9 is arranged in heating collar 11 surrounding by etch steel column, with ensure the water-cooling wall of vacuum chamber 13 exempt from by
The baking of heating collar 11 is heated.
The lower section of described vacuum chamber 13 is provided with pressure transducer 12.
It is provided with lifting suspension ring 6 outside described vacuum chamber 13.
During die-forging forming, being placed between upper mold section 2 and female die 1 by slab 10, clamping element directly contacts with slab 10,
Upper mold section 2 and female die 1 matched moulds form mould, and then forcing press makes upper mold section 2 along appearance profile by hammer stem 7 and bearing 8
Pressure seals, and prevents mould from opening；It is passed through in two chambers of the mould split through slab 10 by valve P1 and P2
Argon, and in vacuum chamber 13, carry out superplasticforming, the strict temperature range controlling aerostatics shaping, hemisphere flange exists
Take out when 700 DEG C, take out formed hemisphere, the intensity at a temperature of this by stripper along with upper mold section 2 promotes simultaneously
30MPa, the hemisphere of taking-up will not be distorted.Rate of cooling increases sharply, and is cooled to during room temperature expend about 3.5 hours time；Former
Need 20 hours with mould cooling and in hemisphere, have residual stress.
The high spot distance slab 10 of described upper mold section 2 is 0.2～0.3mm, enables matched moulds rear mold periphery to compress slab
10, so as not to just when matched moulds upper mold section 2 be pressed onto on slab 10 and make its deformation effect periphery steady, it is ensured that mold cavity excellent sealing.
Described female die 1 is provided with at distance lowest partBoring is with aerofluxus.
The aperture of described boring is less than or equal to the hemispheroidal wall thickness shaped, and otherwise metal flows into boring, and hemisphere is difficult to take out.
Described female die 1 is placed the inner edge upstanding wall of slab 10 and is passed through mutually with arc transition with plane.
The radius of described transition arc is 2～4 times of the thickness of slab 10.
Described heating collar 11 belongs to Ni Cr Mo Nb or other materials heat-resisting alloy, coiled.
Described heating collar 11 can be silicon plug pharoid or high-temperature gas radiant burner.
The hemisphere of the present embodiment cools down in a free state, it is internal does not exist residual stress, and hemisphere can be prevented subsequently
The deformation during boring of dome and side.
The die forging device of the present embodiment can complete to be centered by the plunger under oil cylinder power effect in limited confined space, cylindrical
Ball 16 in guide pin bushing 15 is slidably matched, under the conditions of superplasticforming with the external diameter of the mould that upper mold section 2 and female die 1 are constituted
Mold cavity can reliably seal and centering, it is ensured that drip molding precision.
Claims (9)
1. the die device of hemisphere isothermal gas expansion forming in vacuum, it is characterized in that, including: upper mold section, female die, support ring, stripper, hammer stem, vacuum chamber, the insulating mechanism being arranged in vacuum chamber, heating collar and bearing, wherein: upper mold section and female die match, and it is arranged at central authorities in vacuum chamber, support ring is arranged on upper mold section, and be connected with bearing, bearing is arranged over hammer stem, insulating mechanism is respectively arranged at the lower section of female die and the surrounding of heating collar, and heating collar is arranged at the surrounding of upper mold section and female die.
Die device the most according to claim 1, is characterized in that, described upper mold section external cylindrical surface is slidably matched with female die inner cylinder face.
Die device the most according to claim 1, is characterized in that, the inwall of described female die is hemispherical.
Die device the most according to claim 1, is characterized in that, described upper mold section is connected by hemisphere flange in edge with female die.
Die device the most according to claim 1, is characterized in that, the spherical side of described upper mold section, the side of female die and bottom are respectively equipped with thermocouple.
Die device the most according to claim 1, is characterized in that, described carrier exterior is provided with centering machine, and this centering machine includes: cylindrical guide pin bushing and be movably set in its interior some balls.
Die device the most according to claim 1, is characterized in that, described support ring is provided with stripper.
Die device the most according to claim 1, is characterized in that, described female die is placed the inner edge upstanding wall of slab and passed through mutually with arc transition with plane.
Die device the most according to claim 8, is characterized in that, the radius of described transition arc is 2～4 times of the thickness of slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620506897.XU CN205763582U (en) | 2016-05-27 | 2016-05-27 | The die device of hemisphere isothermal gas expansion forming in vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620506897.XU CN205763582U (en) | 2016-05-27 | 2016-05-27 | The die device of hemisphere isothermal gas expansion forming in vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205763582U true CN205763582U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620506897.XU Active CN205763582U (en) | 2016-05-27 | 2016-05-27 | The die device of hemisphere isothermal gas expansion forming in vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205763582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815505A (en) * | 2022-12-07 | 2023-03-21 | 哈尔滨工业大学 | Ultrahigh-temperature vacuum isothermal forging device and sheath-free isothermal forging method for intermetallic compound |
-
2016
- 2016-05-27 CN CN201620506897.XU patent/CN205763582U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815505A (en) * | 2022-12-07 | 2023-03-21 | 哈尔滨工业大学 | Ultrahigh-temperature vacuum isothermal forging device and sheath-free isothermal forging method for intermetallic compound |
| CN115815505B (en) * | 2022-12-07 | 2023-08-01 | 哈尔滨工业大学 | Ultrahigh-temperature vacuum isothermal forging device and intermetallic compound sheath-free isothermal forging method |
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| GR01 | Patent grant |